package common

import (
	"flag"
	"os"
)

// For now just assume all values source from flags are strings
var (
	BrokerHost = flag.String("host", GetenvDefault("RUN_MQTT_HOST", "localhost"), "Hostname or IP address to an MQTT broker")
	BrokerPort = flag.String("port", GetenvDefault("RUN_MQTT_PORT", "1883"), "Port to an MQTT broker")
)

// GetenvDefault retrieves an environment variable if set, or a provided default
func GetenvDefault(key string, defaultValue string) string {
	val, exists := os.LookupEnv(key)
	if exists {
		return val
	} else {
		return defaultValue
	}
}